Microphone radio cut-out switch



MICROPHONE RADIO CUT-OUT SWITCH Filed Jan. 12, 1931 STAS JAMES R. JFO'UCH, F LOS ANGELES, CALIFORNIA MICROPHONE RADIO CUT-GUT SWITCH Application filed January 12, 1931. Serial No. 508,190.

This invention relates to an improved micontact with the frame or casing of the microphone radio cut-out switch, and has for crophone, and the wire 22 being insulated one of its principal objects the provision of from the frame and terminating at a binding a microphone and an attached cut-out switch post 24: which comprises a screw or the like whereby local broadcasting may be accomsupporting in position a leaf spring 26 which lish d, forms a switch element.

One of the important objects of this in- The end of the leaf spring 26 is shaped vention is to provide a microphone and reasbest shown in Figures 2and 3, and a pushlated apparatus which will enable the owner button 28 of some insulating material is 10 of a radio set to use the same for amplificamounted in a suitable opening in the top'of tion purposes-of his own, and also whereby the microphone casing 14-, passing therea radio set with extension loud speakers can through and contacting with the end of the be used in making emergency announcements switch. or any sort of local broadcasting accomset screw 30 is mounted in the frame plished as, for example, in business houses adjacent the push-button28, and as shown in or apartment buildings where a plurality of F1gure2, this set screw when not scr wed radio sets or loudspeakers are installed. en re y d wn Will not Contact the switch Other and further important objects of element 26, thereby leaving an open circuit, the invention will be apparent from the dis whlch, however, is closed when the push-v closures in the accompanying drawings and button 28 is depressed, forcing the inturned f ll i ifi ti end of the spring into contact with the ad- Th i ti i a preferred forms i acent portion of the mounting for the diaillustrated in the drawings and hereinafter phragm 16. When the screw 30 is set into m f ll d ib d its lowermost position, it contacts with the I th d i spring 26 as shown in Figure 3, and a down- ?5 Figure 1 is an elevation showing the imward mot1on of the push-button 28 breaks proved microphone radio cut-out switch of any cllclllt Whlch has been established!- this invention as applied to an ordinary In operation, the free ends of the wires 20 radio set. and 22 are plugged in or otherwise attached,

Figure 2 is an interior view of the microone to the power tube 12 which es the. so phone and its related switch, showing the l p and the Other t0 the radio S same in one position. chassis as shown at 34, this constituting a Figure 3 illustrates another positioning ground, or an actual ground connection may of the switch for use with certain forms of also be made. 35 radio sets. By manipulating the button, the micro- Figure 4 is a rear interior view of the miphone 14 may be cut in onto the loud-speaker crophone proper, illustrating particularly of the radio set 10, and at the same time the the Wiring onn ction radio reception is cut ofi". This accordingly As shown in the drawing permits the operator of the microphone to 40 The reference numeral 10 indicates genaccomplish local broadcasting through his erally an ordinary radio set of any convenown or connected sets, this being obviously tional type, and the reference numeral 12 inqulte useful in many instances. dicates generally the power tube or the like The device is simple, can be easily connectwhich actuates the loud-speaker of the set. ed, and read y used, and will not interfere The device of this invention includes par- With the desired operation of the set or with ticularly a microphone casing 14 having the the operating connections of the set in any usual diaphragm 16 therein and mounted Way. on a stand or baselS. I am aware that many changes may be A pair of wir 20 and 22 lead from the made and numerous details of construction w microphone, the wire 20 being in electrical varied throughout a wide range without dewe parting from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than as necessitated by the prior art.

I claim as my invention:

1. A microphone, adapted to be connected to a radio set, including the usual diaphragm and connecting Wires, one of said wires adapted to be grounded to the set, and the other adapted for connection with the tube actuating the loud-speaker, and a switch as an integral part of said microphone for cutting off the radio reception and cutting in the microphone.

2. A microphone and a casing therefor, adapted to be connected to a radio set, including the usual diaphragm and connecting wires, one of said wires adapted to be grounded to the set, and the other adapted for connection with the tube actuating the loudspeaker, and a switch mounted within the casing for cutting ofi the radio reception and cutting in the microphone.

3. A microphone, adapted to be connected to a radio set, including the usual diaphragm and connecting wires, one of said wires adapted to begroundedto the set,andthe other adapted for.connection with the tube actuating the loud-speaker, and a switch for simultaneously cutting ofi the radio reception and cutting in the microphone, said switch comprising a leaf spring mounted on the frame, a set screw in the frame adapted to make electrical contact with the spring, and a push-button for operating said spring.

4. A microphone for local broadcasting, including wire connectionsto a radio set, one of said connections adapted to be applied to the power tube for the loud-s eaker, and the other adapted to be grounde to' the chassis of the set, and a manually operated switch as an integral part of said microphone for making and breaking said connections.

5. A microphone, adapted to be connected to a radio set, including the usual diaphragm and connecting wires, one of said wires adapted to be grounded to the set, and the other adapted for connection with the tube actuating the loud-speaker, and an adjustable contact switch as an integral part of said microphone for cutting off the radio reception and cutting in the microphone.

In testimony whereof I aflix my signature.

JAMES R. FOUCH. 

